diff options
| -rw-r--r-- | src/superio/ite/common/env_ctrl.c | 7 | ||||
| -rw-r--r-- | src/superio/ite/common/env_ctrl_chip.h | 5 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/superio/ite/common/env_ctrl.c b/src/superio/ite/common/env_ctrl.c index fbf74468b0..8668110713 100644 --- a/src/superio/ite/common/env_ctrl.c +++ b/src/superio/ite/common/env_ctrl.c @@ -264,6 +264,13 @@ void ite_ec_init(const u16 base, const struct ite_ec_config *const conf) ITE_EC_INTERFACE_SMB_ENABLE); } + /* Set SST/PECI Host Controller Clock to either 24 MHz or internal 32 MHz */ + if (conf->smbus_24mhz) { + pnp_write_hwm5_index(base, ITE_EC_INTERFACE_SELECT, + pnp_read_hwm5_index(base, ITE_EC_INTERFACE_SELECT) | + ITE_EC_INTERFACE_CLOCK_24MHZ); + } + /* Enable reading of voltage pins */ pnp_write_hwm5_index(base, ITE_EC_ADC_VOLTAGE_CHANNEL_ENABLE, conf->vin_mask); diff --git a/src/superio/ite/common/env_ctrl_chip.h b/src/superio/ite/common/env_ctrl_chip.h index 09577a4d84..fa896e4074 100644 --- a/src/superio/ite/common/env_ctrl_chip.h +++ b/src/superio/ite/common/env_ctrl_chip.h @@ -91,6 +91,11 @@ struct ite_ec_config { * Enable SMBus for external thermal sensor. */ bool smbus_en; + /* + * Select 24 MHz clock for external host instead of an + * internally generated 32 MHz clock. + */ + bool smbus_24mhz; }; /* Some shorthands for device trees */ |